From b0d8ed94fe9e74afb49fdf5f11e4add29879c65c Mon Sep 17 00:00:00 2001
From: Rene Mayrhofer <rene@mayrhofer.eu.org>
Date: Thu, 12 Apr 2007 20:30:08 +0000
Subject: [svn-upgrade] Integrating new upstream version, strongswan (4.1.1)

---
 lib/libcrypto/perlasm/readme | 124 -------------------------------------------
 1 file changed, 124 deletions(-)
 delete mode 100644 lib/libcrypto/perlasm/readme

(limited to 'lib/libcrypto/perlasm/readme')

diff --git a/lib/libcrypto/perlasm/readme b/lib/libcrypto/perlasm/readme
deleted file mode 100644
index f02bbee75..000000000
--- a/lib/libcrypto/perlasm/readme
+++ /dev/null
@@ -1,124 +0,0 @@
-The perl scripts in this directory are my 'hack' to generate
-multiple different assembler formats via the one origional script.
-
-The way to use this library is to start with adding the path to this directory
-and then include it.
-
-push(@INC,"perlasm","../../perlasm");
-require "x86asm.pl";
-
-The first thing we do is setup the file and type of assember
-
-&asm_init($ARGV[0],$0);
-
-The first argument is the 'type'.  Currently
-'cpp', 'sol', 'a.out', 'elf' or 'win32'.
-Argument 2 is the file name.
-
-The reciprocal function is
-&asm_finish() which should be called at the end.
-
-There are 2 main 'packages'. x86ms.pl, which is the microsoft assembler,
-and x86unix.pl which is the unix (gas) version.
-
-Functions of interest are:
-&external_label("des_SPtrans");	declare and external variable
-&LB(reg);			Low byte for a register
-&HB(reg);			High byte for a register
-&BP(off,base,index,scale)	Byte pointer addressing
-&DWP(off,base,index,scale)	Word pointer addressing
-&stack_push(num)		Basically a 'sub esp, num*4' with extra
-&stack_pop(num)			inverse of stack_push
-&function_begin(name,extra)	Start a function with pushing of
-				edi, esi, ebx and ebp.  extra is extra win32
-				external info that may be required.
-&function_begin_B(name,extra)	Same as norma function_begin but no pushing.
-&function_end(name)		Call at end of function.
-&function_end_A(name)		Standard pop and ret, for use inside functions
-&function_end_B(name)		Call at end but with poping or 'ret'.
-&swtmp(num)			Address on stack temp word.
-&wparam(num)			Parameter number num, that was push
-				in C convention.  This all works over pushes
-				and pops.
-&comment("hello there")		Put in a comment.
-&label("loop")			Refer to a label, normally a jmp target.
-&set_label("loop")		Set a label at this point.
-&data_word(word)		Put in a word of data.
-
-So how does this all hold together?  Given
-
-int calc(int len, int *data)
-	{
-	int i,j=0;
-
-	for (i=0; i<len; i++)
-		{
-		j+=other(data[i]);
-		}
-	}
-
-So a very simple version of this function could be coded as
-
-	push(@INC,"perlasm","../../perlasm");
-	require "x86asm.pl";
-	
-	&asm_init($ARGV[0],"cacl.pl");
-
-	&external_label("other");
-
-	$tmp1=	"eax";
-	$j=	"edi";
-	$data=	"esi";
-	$i=	"ebp";
-
-	&comment("a simple function");
-	&function_begin("calc");
-	&mov(	$data,		&wparam(1)); # data
-	&xor(	$j,		$j);
-	&xor(	$i,		$i);
-
-	&set_label("loop");
-	&cmp(	$i,		&wparam(0));
-	&jge(	&label("end"));
-
-	&mov(	$tmp1,		&DWP(0,$data,$i,4));
-	&push(	$tmp1);
-	&call(	"other");
-	&add(	$j,		"eax");
-	&pop(	$tmp1);
-	&inc(	$i);
-	&jmp(	&label("loop"));
-
-	&set_label("end");
-	&mov(	"eax",		$j);
-
-	&function_end("calc");
-
-	&asm_finish();
-
-The above example is very very unoptimised but gives an idea of how
-things work.
-
-There is also a cbc mode function generator in cbc.pl
-
-&cbc(	$name,
-	$encrypt_function_name,
-	$decrypt_function_name,
-	$true_if_byte_swap_needed,
-	$parameter_number_for_iv,
-	$parameter_number_for_encrypt_flag,
-	$first_parameter_to_pass,
-	$second_parameter_to_pass,
-	$third_parameter_to_pass);
-
-So for example, given
-void BF_encrypt(BF_LONG *data,BF_KEY *key);
-void BF_decrypt(BF_LONG *data,BF_KEY *key);
-void BF_cbc_encrypt(unsigned char *in, unsigned char *out, long length,
-        BF_KEY *ks, unsigned char *iv, int enc);
-
-&cbc("BF_cbc_encrypt","BF_encrypt","BF_encrypt",1,4,5,3,-1,-1);
-
-&cbc("des_ncbc_encrypt","des_encrypt","des_encrypt",0,4,5,3,5,-1);
-&cbc("des_ede3_cbc_encrypt","des_encrypt3","des_decrypt3",0,6,7,3,4,5);
-
-- 
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